News ReleaseAir Products Extends Tender Offer to Acquire Airgas

November 30, 2010 Lehigh Valley, Pa.

Air Products (NYSE: APD) today announced that it has extended by 10 business days the expiration date of its tender offer for all outstanding common shares of Airgas, Inc. (NYSE: ARG) for $65.50 per share in cash. The offer and withdrawal rights are now scheduled to expire at 12:00 midnight New York City time on December 17, 2010. The tender offer was previously scheduled to expire on December 3, 2010.

The offer is being extended to enable the Delaware Chancery Court to render a decision on pending litigation between Air Products and Airgas.

Except for the extension of the tender offer expiration date, all other terms and conditions of the offer remain unchanged. As of the close of business on Monday, November 29, 2010, approximately 1,879,967 shares of Airgas common stock had been validly tendered into and not withdrawn from the offer.

Airgas’ stockholders may obtain copies of all of the offering documents free of charge at the SEC’s website (www.sec.gov) or by directing a request to MacKenzie Partners, Inc., the Information Agent for the offer, at 212-929-5500 or toll-free at 800-322-2885. Additional information about the transaction, including the offering documents, is also available at www.airproducts.com/airgasoffer.

Air Products (NYSE:APD) serves customers in industrial, energy, technology and healthcare markets worldwide with a unique portfolio of atmospheric gases, process and specialty gases, performance materials, and equipment and services. Founded in 1940, Air Products has built leading positions in key growth markets such as semiconductor materials, refinery hydrogen, home healthcare services, natural gas liquefaction, and advanced coatings and adhesives. The company is recognized for its innovative culture, operational excellence and commitment to safety and the environment. In fiscal 2010, Air Products had revenues of $9 billion, operations in over 40 countries, and 18,300 employees around the globe. For more information, visit www.airproducts.com.

ADDITIONAL INFORMATION On February 11, 2010, Air Products Distribution, Inc. (“Purchaser”), a wholly owned subsidiary of Air Products and Chemicals, Inc. (“Air Products”), commenced a cash tender offer for all the outstanding shares of common stock of Airgas, Inc. (“Airgas”) not already owned by Air Products, subject to the terms and conditions set forth in the Offer to Purchase dated as of February 11, 2010 (the “Offer to Purchase”). The purchase price to be paid upon the successful closing of the cash tender offer is $65.50 per share in cash, without interest and less any required withholding tax, subject to the terms and conditions set forth in the Offer to Purchase, as amended. The offer is scheduled to expire at midnight, New York City time, on Friday, December 17, 2010, unless further extended in the manner set forth in the Offer to Purchase.

This communication does not constitute an offer to buy or solicitation of an offer to sell any securities. The tender offer is being made pursuant to a tender offer statement on Schedule TO (including the Offer to Purchase, a related letter of transmittal and other offer materials) filed by Air Products with the U.S. Securities and Exchange Commission (“SEC”) on February 11, 2010. INVESTORS AND SECURITY HOLDERS OF AIRGAS ARE URGED TO READ THESE AND OTHER DOCUMENTS FILED WITH THE SEC CAREFULLY IN THEIR ENTIRETY BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Investors and security holders can obtain free copies of these documents and other documents filed with the SEC by Air Products through the web site maintained by the SEC at http://www.sec.gov. The Offer to Purchase and related materials may also be obtained for free by contacting the Information Agent for the tender offer, MacKenzie Partners, Inc., at 212-929-5500 or toll-free at 800-322-2885.

Air Products (NYSE: APD) today announced that it has extended by 10 business days the expiration date of its tender offer for all outstanding common shares of Airgas, Inc. (NYSE: ARG) for $65.50 per share in cash. The offer and withdrawal rights are now scheduled to expire at 12:00 midnight New York City time on December 17, 2010. The tender offer was previously scheduled to expire on December 3, 2010.

The offer is being extended to enable the Delaware Chancery Court to render a decision on pending litigation between Air Products and Airgas.

Except for the extension of the tender offer expiration date, all other terms and conditions of the offer remain unchanged. As of the close of business on Monday, November 29, 2010, approximately 1,879,967 shares of Airgas common stock had been validly tendered into and not withdrawn from the offer.

Airgas’ stockholders may obtain copies of all of the offering documents free of charge at the SEC’s website (www.sec.gov) or by directing a request to MacKenzie Partners, Inc., the Information Agent for the offer, at 212-929-5500 or toll-free at 800-322-2885. Additional information about the transaction, including the offering documents, is also available at www.airproducts.com/airgasoffer.

Air Products (NYSE:APD) serves customers in industrial, energy, technology and healthcare markets worldwide with a unique portfolio of atmospheric gases, process and specialty gases, performance materials, and equipment and services. Founded in 1940, Air Products has built leading positions in key growth markets such as semiconductor materials, refinery hydrogen, home healthcare services, natural gas liquefaction, and advanced coatings and adhesives. The company is recognized for its innovative culture, operational excellence and commitment to safety and the environment. In fiscal 2010, Air Products had revenues of $9 billion, operations in over 40 countries, and 18,300 employees around the globe. For more information, visit www.airproducts.com.

ADDITIONAL INFORMATION On February 11, 2010, Air Products Distribution, Inc. (“Purchaser”), a wholly owned subsidiary of Air Products and Chemicals, Inc. (“Air Products”), commenced a cash tender offer for all the outstanding shares of common stock of Airgas, Inc. (“Airgas”) not already owned by Air Products, subject to the terms and conditions set forth in the Offer to Purchase dated as of February 11, 2010 (the “Offer to Purchase”). The purchase price to be paid upon the successful closing of the cash tender offer is $65.50 per share in cash, without interest and less any required withholding tax, subject to the terms and conditions set forth in the Offer to Purchase, as amended. The offer is scheduled to expire at midnight, New York City time, on Friday, December 17, 2010, unless further extended in the manner set forth in the Offer to Purchase.

This communication does not constitute an offer to buy or solicitation of an offer to sell any securities. The tender offer is being made pursuant to a tender offer statement on Schedule TO (including the Offer to Purchase, a related letter of transmittal and other offer materials) filed by Air Products with the U.S. Securities and Exchange Commission (“SEC”) on February 11, 2010. INVESTORS AND SECURITY HOLDERS OF AIRGAS ARE URGED TO READ THESE AND OTHER DOCUMENTS FILED WITH THE SEC CAREFULLY IN THEIR ENTIRETY BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Investors and security holders can obtain free copies of these documents and other documents filed with the SEC by Air Products through the web site maintained by the SEC at http://www.sec.gov. The Offer to Purchase and related materials may also be obtained for free by contacting the Information Agent for the tender offer, MacKenzie Partners, Inc., at 212-929-5500 or toll-free at 800-322-2885.

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